Using extra javascript sources you can achieve what you are looking for.
From jQuery UI:
jquery.simulate.js
From 3rd party:
Source: http://j-ulrich.github.io/jquery-simulate-ext/
jquery.simulate.ext.js
jquery.simulate.drag-n-drop.js
Props to j-ulrich for making it so easy.
function dragTo(x, y) {
$("#draggable").simulate("drag-n-drop", {dx: x, dy: y, interpolation: { stepWidth: 1, stepDelay: 1}});
}